1. Introduction
This manual provides detailed instructions for the assembly, operation, and maintenance of your hjh OFFICE 657210 PORTO ECO office chair. Please read these instructions carefully before use to ensure proper function and safety.
Safety Information
Warning: This chair is equipped with unbraked casters. Use with caution to prevent unintended movement. The maximum load capacity is 110 kg. Do not exceed this limit to ensure user safety and product integrity.
2. Setup and Assembly
Follow these steps to assemble your hjh OFFICE PORTO ECO office chair. It is recommended to assemble the chair on a soft surface to prevent damage.
- Unpack Components: Carefully remove all parts from the packaging and verify against the parts list (not provided in this manual, refer to packaging).
- Attach Casters: Insert the double safety casters into the base. Press firmly until they click into place.
- Insert Gas Lift: Place the gas lift cylinder into the center hole of the chair base.
- Assemble Seat and Backrest: Attach the seat mechanism to the underside of the seat cushion. Then, connect the backrest to the seat mechanism. Ensure all screws are tightened securely.
- Mount Seat onto Gas Lift: Carefully place the assembled seat and backrest onto the gas lift cylinder. Apply downward pressure to secure the connection.
Figure 2.1: Illustration of chair components before assembly. This image shows the base, casters, gas lift, seat, and backrest, indicating how they fit together.
3. Operating Instructions
Your hjh OFFICE PORTO ECO chair features several adjustments to optimize your comfort and support.
Seat Height Adjustment (Toplift System)
To adjust the seat height, locate the lever on the right side beneath the seat. While seated, pull the lever upwards to lower the seat. To raise the seat, stand up and pull the lever upwards. Release the lever at the desired height to lock it in place.
Synchronous Mechanism and Backrest Recline
The chair features a synchronous mechanism, allowing the backrest and seat to recline together in a coordinated movement. Locate the lever on the left side beneath the seat. Pull the lever outwards to unlock the recline function, allowing the backrest to move freely. Push the lever inwards to lock the backrest in one of the four available positions.
Adjustable Lumbar Support
The backrest includes adaptable lumbar support. This support can be adjusted vertically to align with the natural curve of your lower back. Gently slide the lumbar support element up or down on the backrest to find your preferred position.
Figure 3.1: Visual guide for adjusting seat height and backrest recline. The image highlights the levers for these functions and the range of motion for the backrest.
Figure 3.2: Detailed view of the chair's features, including the breathable mesh backrest, adjustable lumbar support, and the mechanism for seat height adjustment.
4. Maintenance
Regular cleaning and maintenance will prolong the life and appearance of your office chair.
Cleaning Instructions
- Fabric Surfaces: For the fabric seat and mesh backrest, use a soft cloth dampened with mild soap and water. Gently wipe the surface. Avoid abrasive cleaners or harsh chemicals.
- Plastic and Metal Parts: Wipe plastic and metal components with a damp cloth. Dry immediately with a clean, soft cloth.
- Casters: Periodically clean the casters to remove dust, hair, and debris that may hinder smooth movement.
General Care
- Avoid exposing the chair to direct sunlight for extended periods to prevent fading of fabric.
- Regularly check all screws and connections to ensure they are tight. Retighten if necessary.
5. Troubleshooting
This section addresses common issues you might encounter with your office chair.
Chair Does Not Adjust Height
- Ensure the height adjustment lever is fully engaged.
- Check if the gas lift cylinder is properly seated in the base and seat mechanism.
- If the issue persists, the gas lift may need replacement. Contact customer support.
Backrest Does Not Recline or Lock
- Verify that the synchronous mechanism lever is correctly operated (pulled out to recline, pushed in to lock).
- Inspect the mechanism for any obstructions or damage.
Chair Squeaks or Wobbles
- Tighten all assembly screws, especially those connecting the seat, backrest, and mechanism.
- Apply a small amount of silicone-based lubricant to moving parts or connections if squeaking persists.
6. Specifications
| Feature | Detail |
|---|---|
| Brand | hjh OFFICE |
| Model Number | 657210 |
| Color | Black |
| Material | Fabric (seat), Breathable Mesh (backrest) |
| Product Dimensions (L x W x H) | 44 x 49 x 108 cm |
| Seat Height Range | 46 cm to 58 cm |
| Seat Width | 49 cm |
| Item Weight | 14 Kilograms |
| Maximum Load Capacity | 110 kg |
| Special Features | Ergonomic design, Double safety casters (unbraked), Adjustable lumbar support, Synchronous mechanism (lockable in 4 positions), Toplift system for height adjustment |
Figure 6.1: Dimensional drawing of the chair, illustrating height, width, and depth measurements, along with recommended user height and maximum weight capacity.
7. Warranty Information
Specific warranty details for the hjh OFFICE 657210 PORTO ECO office chair are not provided in this manual. Please refer to the product packaging, the manufacturer's official website, or your point of purchase for comprehensive warranty terms and conditions.
8. Customer Support
For further assistance, technical support, or inquiries regarding spare parts, please contact hjh OFFICE customer service. Contact information can typically be found on the manufacturer's official website or on your purchase receipt.
Manufacturer: hjh OFFICE
Model: PORTO ECO (657210)
